package com.itheima.controller;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.itheima.controller.utils.Result;
import com.itheima.domain.Book;
import com.itheima.service.IBookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.io.IOException;
import java.util.List;

@RestController
@RequestMapping("/books")
public class BookController {
    @Autowired
    private IBookService bookService;

    @GetMapping
    public Result getAll(){
        return new Result(true,bookService.list());
    }

    @PostMapping
    public Result save(@RequestBody Book book) throws IOException {
//        Result r = new Result();
//        boolean flag = bookService.save(book);
//        r.setFlag(flag);
        //r.setData(null);
//        return r;
        if(book.getName().equals("123")) throw new IOException();
        boolean flag = bookService.save(book);
        return new Result(flag,flag ? "添加成功^_^" : "添加失败-_-!");

    }

    @PutMapping
    public Result update(@RequestBody Book book){
        return new Result(bookService.modify(book));
    }

    @DeleteMapping("{id}")
    public Result delete(@PathVariable Integer id){
        return new Result(bookService.delete(id));
    }

    @GetMapping("{id}")
    public Result getById(@PathVariable Integer id){
        return new Result(true,bookService.getById(id));
    }

//    @GetMapping("/{currentPage}/{pageSize}")
//    public Result getPage(@PathVariable int currentPage,@PathVariable int pageSize){
//        IPage<Book> page = bookService.getPage(currentPage,pageSize);
//        //如果当前页码值大于了总页码值，那么重新执行查询操作，使用最大页码作为当前页码值
//        if(currentPage > page.getPages()){
//            page = bookService.getPage((int)page.getPages(),pageSize);
//        }
//        return new Result(true,page);
//    }

    @GetMapping("/{currentPage}/{pageSize}")
    public Result getPage(@PathVariable int currentPage,@PathVariable int pageSize,Book book){

        IPage<Book> page = bookService.getPage(currentPage,pageSize,book);
        //如果当前页码值大于了总页码值，那么重新执行查询操作，使用最大页码作为当前页码值
        if(currentPage > page.getPages()){
            page = bookService.getPage((int)page.getPages(),pageSize,book);
        }
        return new Result(true,page);
    }

}
